body {
    font-family: "Microsoft YaHei";
    margin: 0;
    padding: 0;
}

.main {
    height: 100%;
}

div {
    border: none;
    padding: 0;
    margin: 0;
}

.header {
    height: 52px;
    width: 100%;
    position: fixed;
    top: 0;
    background-color: #0083CB;
    z-index: 100;
}

.content {
    position: absolute;
    top: 52px;
    bottom: 0;
    width: 100%;
    z-index: 99;
    overflow-y: scroll;
    overflow-x: hidden;
}